{"id":20995,"date":"2022-03-07T14:04:21","date_gmt":"2022-03-07T14:04:21","guid":{"rendered":"https:\/\/www.africa-press.net\/tchad\/politique\/des-ingenieurs-devoilent-la-plus-petite-batterie-au-monde"},"modified":"2022-03-07T14:19:23","modified_gmt":"2022-03-07T14:19:23","slug":"des-ingenieurs-devoilent-la-plus-petite-batterie-au-monde","status":"publish","type":"post","link":"https:\/\/www.africa-press.net\/tchad\/toutes-les-actualites\/des-ingenieurs-devoilent-la-plus-petite-batterie-au-monde","title":{"rendered":"Des ing\u00e9nieurs d\u00e9voilent la plus petite batterie au monde"},"content":{"rendered":"

Africa-Press – Tchad. <\/strong><\/span>Un tel dispositif pourrait notamment \u00eatre utilis\u00e9 pour alimenter de minuscules capteurs implantables dans le corps humain.<\/p>\n

La miniaturisation constante de l\u2019\u00e9lectronique exige de repenser les dispositifs qui l\u2019alimentent. R\u00e9cemment, des chercheurs de l\u2019universit\u00e9 technologique de Chemnitz ont d\u00e9voil\u00e9 le plus petit exemple en la mati\u00e8re.<\/p>\n

UN DISPOSITIF ABSOLUMENT MINUSCULE<\/b><\/p>\n

Ce syst\u00e8me de stockage d\u2019\u00e9nergie r\u00e9volutionnaire, r\u00e9cemment d\u00e9crit dans la revue Advanced Energy Materials, repose sur une approche \u00ab g\u00e2teau roul\u00e9 \u00bb. En lieu et place de la confiture et de la g\u00e9noise, les scientifiques ont utilis\u00e9 des collecteurs de courant et des bandes d\u2019\u00e9lectrodes en mat\u00e9riaux polym\u00e8res, m\u00e9talliques et di\u00e9lectriques qui ont \u00e9t\u00e9 superpos\u00e9s sur une fine surface gaufr\u00e9e en silicium pr\u00e9alablement tendue. Lorsque ces couches individuelles sont d\u00e9coll\u00e9es, la tension est rel\u00e2ch\u00e9e et les mat\u00e9riaux se replient, cr\u00e9ant une \u00ab micro-batterie cylindrique auto-enroul\u00e9e \u00bb.<\/p>\n

Mesurant moins d\u2019un millim\u00e8tre carr\u00e9 de diam\u00e8tre, soit la taille d\u2019un grain de poussi\u00e8re, ce minuscule dispositif pr\u00e9sente une densit\u00e9 \u00e9nerg\u00e9tique minimale de 100 microwattheures par centim\u00e8tre carr\u00e9. De telles caract\u00e9ristiques le rendraient particuli\u00e8rement adapt\u00e9 aux capteurs \u00e0 m\u00eame d\u2019\u00eatre implant\u00e9s dans le corps humain.<\/p>\n

Ces derni\u00e8res ann\u00e9es, diff\u00e9rents dispositifs exp\u00e9rimentaux ont \u00e9t\u00e9 d\u00e9velopp\u00e9s afin de recueillir en temps r\u00e9el toutes sortes d\u2019informations, des niveaux d\u2019oxyg\u00e8ne dans les tissus profonds \u00e0 la surveillance des organes vitaux \u00e0 la suite d\u2019op\u00e9rations chirurgicales lourdes, mais la plupart d\u2019entre eux reposent sur la transformation des vibrations m\u00e9caniques ou de la chaleur en \u00e9nergie\/\u00e9lectricit\u00e9.<\/p>\n

Selon l\u2019\u00e9quipe, leur nouveau syst\u00e8me rechargeable pourrait notamment \u00eatre utilis\u00e9 comme batterie de secours en cas d\u2019interruption de la collecte d\u2019\u00e9nergie.<\/p>\n

\u00ab NOUS POUVONS NOUS ATTENDRE \u00c0 DES MICRO-BATTERIES BEAUCOUP PLUS PUISSANTES DANS UN AVENIR PROCHE \u00bb<\/b><\/p>\n

Parmi les autres applications envisageables pour leur micro-batterie cylindrique, les auteurs de l\u2019\u00e9tude \u00e9voquent les syst\u00e8mes robotiques et les dispositifs \u00e9lectroniques ultra-flexibles, tout en soulignant qu\u2019elle peut actuellement alimenter les plus petites puces informatiques du monde pendant environ 10 heures.<\/p>\n

\u00ab Il existe encore une large marge d\u2019am\u00e9lioration pour ce type de technologie \u00bb, souligne Oliver Schmidt, auteur principal de l\u2019\u00e9tude. \u00ab Nous pouvons nous attendre \u00e0 des micro-batteries beaucoup plus puissantes dans un avenir proche. \u00bb<\/p>\n

Pour plus d’informations et d’analyses sur la Tchad<\/a>, suivez Africa-Press<\/a><\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"

Africa-Press – Tchad. Un tel dispositif pourrait notamment \u00eatre utilis\u00e9 pour alimenter de minuscules capteurs implantables dans le corps humain. La miniaturisation constante de l\u2019\u00e9lectronique exige de repenser les dispositifs qui l\u2019alimentent. R\u00e9cemment, des chercheurs de l\u2019universit\u00e9 technologique de Chemnitz ont d\u00e9voil\u00e9 le plus petit exemple en la mati\u00e8re. UN DISPOSITIF ABSOLUMENT MINUSCULE Ce syst\u00e8me […]<\/p>\n","protected":false},"author":82,"featured_media":20994,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[22,11,10],"tags":[37,292,29],"class_list":["post-20995","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-divers","category-homepage-french","category-toutes-les-actualites","tag-africa-press","tag-africa-press-tchad","tag-tchad"],"yoast_head":"\nDes ing\u00e9nieurs d\u00e9voilent la plus petite batterie au monde - tchad<\/title>\n<meta name=\"description\" content=\"Un tel dispositif pourrait notamment \u00eatre utilis\u00e9 pour alimenter de minuscules capteurs implantables dans le corps humai ...\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.africa-press.net\/tchad\/toutes-les-actualites\/des-ingenieurs-devoilent-la-plus-petite-batterie-au-monde\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Des ing\u00e9nieurs d\u00e9voilent la plus petite batterie au monde\" \/>\n<meta property=\"og:description\" content=\"Un tel dispositif pourrait notamment \u00eatre utilis\u00e9 pour alimenter de minuscules capteurs implantables dans le corps humai ...\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.africa-press.net\/tchad\/toutes-les-actualites\/des-ingenieurs-devoilent-la-plus-petite-batterie-au-monde\" \/>\n<meta property=\"og:site_name\" content=\"tchad\" \/>\n<meta property=\"article:published_time\" content=\"2022-03-07T14:04:21+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2022-03-07T14:19:23+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/static.africa-press.net\/tchad\/sites\/41\/2022\/03\/img-6226144d3cc2b.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1024\" \/>\n\t<meta property=\"og:image:height\" content=\"576\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"cfeditorfr\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u00c9crit par\" \/>\n\t<meta name=\"twitter:data1\" content=\"cfeditorfr\" \/>\n\t<meta name=\"twitter:label2\" content=\"Dur\u00e9e de lecture estim\u00e9e\" \/>\n\t<meta name=\"twitter:data2\" content=\"2 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/www.africa-press.net\/tchad\/toutes-les-actualites\/des-ingenieurs-devoilent-la-plus-petite-batterie-au-monde#article\",\"isPartOf\":{\"@id\":\"https:\/\/www.africa-press.net\/tchad\/toutes-les-actualites\/des-ingenieurs-devoilent-la-plus-petite-batterie-au-monde\"},\"author\":{\"name\":\"cfeditorfr\",\"@id\":\"https:\/\/www.africa-press.net\/tchad\/#\/schema\/person\/2b1cf3cd81a31e3cd26889ca66d677f1\"},\"headline\":\"Des ing\u00e9nieurs d\u00e9voilent la plus petite batterie au monde\",\"datePublished\":\"2022-03-07T14:04:21+00:00\",\"dateModified\":\"2022-03-07T14:19:23+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/www.africa-press.net\/tchad\/toutes-les-actualites\/des-ingenieurs-devoilent-la-plus-petite-batterie-au-monde\"},\"wordCount\":425,\"commentCount\":0,\"image\":{\"@id\":\"https:\/\/www.africa-press.net\/tchad\/toutes-les-actualites\/des-ingenieurs-devoilent-la-plus-petite-batterie-au-monde#primaryimage\"},\"thumbnailUrl\":\"https:\/\/static.africa-press.net\/tchad\/sites\/41\/2022\/03\/img-6226144d3cc2b.jpg\",\"keywords\":[\"Africa Press\",\"Africa Press-Tchad\",\"Tchad\"],\"articleSection\":[\"Divers\",\"homepage-french\",\"Toutes les actualit\u00e9s\"],\"inLanguage\":\"fr-FR\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\/\/www.africa-press.net\/tchad\/toutes-les-actualites\/des-ingenieurs-devoilent-la-plus-petite-batterie-au-monde#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.africa-press.net\/tchad\/toutes-les-actualites\/des-ingenieurs-devoilent-la-plus-petite-batterie-au-monde\",\"url\":\"https:\/\/www.africa-press.net\/tchad\/toutes-les-actualites\/des-ingenieurs-devoilent-la-plus-petite-batterie-au-monde\",\"name\":\"Des ing\u00e9nieurs d\u00e9voilent la plus petite batterie au monde - 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